Sliding-door lock.



No. 633,29l. Patented sept. I9, |899. A. mawELL.A SLIDING DOOR LOCK.

(Application med Aug. 3, 1898.) v (No Mol-iel.)

UNITED STATES- PATENT Fries.

AUGUSTUS NEWELL, OF IASADENA, CALIFORNIA, ASSIGNOR OF ONE-HALF TO DANIELSCIIUYLER, OFSAN DIEGO, CALIFORNIA.

sLlDlNc-DOOR LOCK.

SPECIFICA-Tron forming part of Letters Patent No. 633,291, datedseptember 19, 1899.

Application filed August 31898. :Serial No. 687,616. (No model.)

To all whom, it may concern.-

Be it known that I, AUGUSTUS NEWELL, a citizen of the United States,residing at Pasadena, in the county of Los Angeles and State of 5California, have invented new and useful Improvements in Sliding-DoorLocks, of which the following is a specification.

The particular object of my invention is to produce a neat, cheap, andsimple lock which xo will be especially adapted for sliding doors,

in which the door is entirely chambered within the wall when open, alock which will be devoid of springs for operating the catch, will beprovided .with a convenient pull which is always in position to bereadily grasped when it is desired to close the door, and is alsoprovided with inconspicuous, simple, durable, and conveniently-operatedmeans whereby the lock may be' readily unlatched when it is zo desiredto open the door.

A further object of my invention is to provide a lock of this characterwhich, may be locked and unlocked from either side of the doorway and soarranged that after the lock z 5 is unlocked the key must be removedfrom the lock before the latch can b'e unlatched. By this arrangementIprovide means whereby it is rendered unlikely that the key will beaccidentally left in the door and will engage with the jamb of the doorwhen the door is pushed back into its recess in opening the door-that isto say, with my improved construction when the latch is in its operativeposition there are no projecting knobs, keys,

3 5 or other operating devices which prevent the door from being fullychambered in the wall when opened, and therefore I avoid the liabilitypresent in many locks of this character .of bruising or marring thewoodwork by ac- 4o cidental contact therewith of such projecting parts.

My invention comprises the various features of construction andcombinations of parts hereinafter fully set forth and claimed.

The accompanying drawings illustrate my invention.

Figure 1 is a fragmental sectional view of a door and jamb, showing myimproved lock in position. In this view one side of the lockcase isremoved in order to expose the interior arrangement. Fig. 2 is avertical crosssection on line indicated by 2 2, Fig. l. Fig.

3 is a fragmental side elevation of a door provided with my invention,showing the escutcheon-plate and the recessed handhold. When the lock isin position in the door and the door is closed, the only parts of thelock exposed to view will be those shown in this iigure. Fig. 4 is across-section on lineindicated by 4 et, Fig. l, showing the keyin place6o in the lock. Fig. 5 is a perspective view of the bolt and thetumblers which engage the bolt, and Fig. 6 is a perspective View of oneof the handhelds.

In the drawings, A represents the case of the lock. This case has oneside A rendered removable by means of screws in the ordinary manner.

B represents the catch bolt, which, as shown in the drawings, comprisesa rectangu- 7o lar frame pivoted in the case by a pivot-pintle C, castintegral with the case. This frame is provided upon its front side witha doorpull B', which projects from the front of the case, as clearlyshown in Fig. l, and is provided below the door-pull with a catch b,which is adapted to engage with the catchplate D, which is arranged tobe secured to the jamb of the door by screws d and is provided with arecess d to receive and chamber So the door-pull B when the door is inits closed position, as indicated in Fig. l. The frame is thus pivotedvat one corner, the catch is arranged at another corner of the frame, andat a third corner of the frame a bolt `E is provided. This bolt iscarried by the latch-frame and is adapted to be projected upward, asindicated in dotted lines in Fig.v l, to engage with a lu g @,providedupon the case,to thereby lock the frame in its latched position or to be9o retracted, as shown in Fig. 5, and thereby released therefrom toallow the frame to be swung in the case to lift the catch from itsengagement with the catch-plate. The opening 0/ in the front of thecase, through which 95 the door-pull projects, is suiiiciently long toallow the frame to swing upward to release the catch, and a projection his provided upon the upper front corner of the rectangular frame toclose this opening when the catch is roo in its latched position.

A" represents oblong openings provided in the side walls of the case andthrough which the operating-pin works as the rectangular frame is swungin operating the catch.

I provide for operating the catch positive means which will not rack orget out of order under continued use. This means comprises a pivot-pinF, which passes through the case at a point coaxial with the pivotalpoint of the rectangular frame B (preferably through the pintle-lug C)and projects from each side of the case.

G represents a key shaft which passes through an opening g, provided inthe rear upper corner of the rectangular frame B and is provided at itsmid-length with an annular groove y, through which slide locking-bolt Eand the tu mblers e e', &c. This shaft is provided with a key-slot g,extending from end to end of the shaft and adapted to receive a fiat keyH. The tumblers e and e" are duplicates of each other and are arrangedupon opposite sides of the central tumbler c, which is at the mid-lengthof the key-shaft. The key is provided with duplicate wards h, arrangedupon opposite sides of the ward It", which operates the central tumblere', which wards engage with and operate the bolt, andoppositely-arranged wards h h'", which engage and operate the tumblers cc", (and a central ward h", which engages with and operates the tumblere.) A shoulder H is provided upon one side of the key to engage with theend of the key-shaft to thereby regulate the distance to which the keyenters the keyshaft and to bring the wards into exact relation with thetumblers and the bolt no matter from which side of the lock the key isinserted. The opening g in the rectangular frame, and which receives thekey-shaft, is provided upon each side with a boss b, which is interiorlyscrew-threaded, and socket members I I are arranged to screw into thescrewthreaded bosses upon opposite sides of the frame and to chamber theends of the keyshaft. The key-shaft is provided upon each side of thegroove g with a projecting iange G', which lian ges fit intocorresponding sockets in the socket member to thereby prevent axialdisplacement of the key-shaft when the various parts are securedtogether and to thus insure that the key when inserted in the slot inthe key-shaft will always be brought into exact position with relationto the tu mblers and the bolt. This key-shaft forms an operatingpin bywhich the latch is operated, and the ends of the key-shaft project fromthe socket members, as shown in Figs. 2 and 4:, for a purposehereinafter explained.

J J are escutcheon-plates which are adapted to be secured upon oppositesides of the door by means of screws j. Each of these escutcheon-platesis provided near its lower end with a pivot-blockj, which is riveted tothe plate and is provided with a socket j", adapted to seat upon andchamber one end of the pivot-pin F and to thus form practically acontinuation ofsuchpiVot-pin. Each block is provided with an annulargroove j", into which is slipped the slotted lower end of a handhold K,which is provided with a recess K to receive the ends of the fingers andto be thereby conveniently operated. The upper end of each handhold isheld in position by means ot' a guide lug or button 7.1, which guidesthe handhold as it swings upon its pivot. The upper end of each handholdis provided with a socket k', adapted to fit upon and seat one of theprojecting ends of the key-shaft, so that when the handholds are swungupon their pivots the key-shaft will swing the catch-bolt to release thecatch from its engagement with the catch-plate. The escutcheon-platesare each provided with an opening J to allow access to the handholds andare also provided with a keyhole J which registers with the keyhole inthe lock only when the catch is in its latched position, as shown inFigs. l, 3, and 4. By this means after unlocking the lock it isnecessary to withdraw the key from the keyhole before the latch can beswung into its unlatched position, since the key engages with theescutcheon-plate and forms an effectual stop,which must be eitherremovedor slleared off before the latch-frame can be swung toward the rear todisengage the catch from the catch-plate. This insures that the keyshall be withdrawn from the lock before the door is opened, and therebyavoids all liability of leaving the key in the lock and causing it tobecome bent orbroken by being carried back against the door-jamb whenthe door is opened.

In practical operation the socket members I I', the key-shaft G, and thepivot-pin F are removed from the lock before the case is inserted in themortise in the door. When the case is in position in the door-mortise,the key-shaft is rst inserted into its seat. The socket members arescrewed from the opposite sides of the door into the screw-threadedbosses. The pintle-pin F is inserted into position, and theescutcheon-plates J, together with the handholds, which are pivotedthereto and for which suitable recesses have been provided in the door,are then secured upon opposite sides of the.door, with the pivot-pinseated in the socket j" and the key-shaft seated in the sockets 7a'. Thedevice is then ready for operation.

When the door is closed, as shown in Fig. l, if it is desired to openthe door the fingers are inserted into one of the handholds and thehandhold is swung toward the rear upon its pivot, thus through themedium of the key-shaft swinging the rectangular frame B upon itspivotand lifting the catch b from its engagement with the catch-plate.Further force exerted upon the handhold will push the door open, and thefingers are then removed from the handhold, thus permitting the latch todrop back into its normal position. (Indicated in Fig. l.) The weightlof the door-pull B is sufficient to insure the IOO IIO

IZO

proper operation of the catch from the force of gravity,and I am by thisimproved con-v struction enabled to dispense with springs for thispurpose. When it is desired to close the door, the fingers may beinserted in the door-puil B/ and the door readily drawn into its closedposition, the door-pull entering the recess or chamber d in thecatch-plate and assuming the position shown in Fig. 1.

If it is desired to lock the door, the key may be inserted from eitherside of the lock, and the key-shaft is rotated by the key, the duplicatewards of which engage with the tumblers and with the bolt, carrying thebolt up in its locked position, as indicated in dotted lines in Fig. 1.The key may be partially or wholly removed from the lock after this isdone. When it is desired to unlock the lock, the key is again insertedand rotated in the reverse direction, thus operating the tumblers andcarrying the bolt into its unlocked position, after which the key isremoved and the latch may beoperated by hand, as hereinbefore described.p

By arranging the door-pull upon the latchbolt two objects areaccomplished, onel being that of economy of space and material and theother being that of giving sufficient weight to the catch-bolt toovercome the Weight of the locking-bolt and the latch-operating meansand to insure that the force of gravity will cause the operation of thelatch without the aid of springs, which are not only expensive, but areliable to break.

By arranging the locking-bolt upon the latch -bolt I am enabled to usethe same bolt as a latching and locking bolt, and by reason of soarranging the device that the key must be removed from the keyholebefore the latch can be unlatched I reduce to a minimum the chances ofsuccessful tampering with the lock, since the key or other instrumentused must be fully withdrawn from the keyhole before the operator canascertain whether or not he has succeeded in unlocking the lock.

Now, having described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. In a door-lock, the combination set forth of the case; a rectangularframe provided at one corner with a catch and pivotally secured in thecase by a pivot arranged at another corner of the frame; a bolt mountedin a third corner of the frame and adapted to engage with and to bedisengaged from the case; means for swinging the frame upon its pivot;and means for operating the bolt.

2. In a door-lock, the combination set forth of a case; a rectangularframe pivotally secured by one corner in the case and having upon itsouter side a door-pull, and a catch projecting below the door-pull; abolt mounted in the rectangular frame and adapted to engage the case tolock the frame in position, or to be disengaged therefrom to allow theframe to swing upon its pivot; means for operating the bolt; means foroperating the frame; and the catch-plate adapted to be secured to thejamb of the door and provided with a recess to receive and chamber thedoorpull when the door is closed.

3. A tumbler-lock provided with two or more opp ositely-arrangedduplicate tumblers; a key-shaft provided with a key-slot extending fromend to end of said shaft; and a key adapted to fit in the slotted shaftand provided with oppositely arranged duplicate wards to operate thetumblers and the bolt,l when the key is inserted from either side of thelock.

4. A tumbler-lock comprising a case; a swinging frame pivoted in thecase and carrying a latch, and also carrying a bolt adapted to engagethe caseto lock the frame in its latched position; a key-shaft carriedby the frame and slotted f-rom end to end; oppo sitely-arrangedduplicate tumblers adapted to engage the bolt; and a key, adapted toslide in the slotted shaft and provided with duplicate wards to engagethe duplicate tumblers and the bolt and to operate them when the key isinserted from either side of the lock.

5. In a lock, the combination set forth. of the case provided in itsside walls with the openings for the key-shaft; the latch-frame, pivotedin the case by a pivot arranged at a distance from such openings g thekey-shaft,

passing through the frame and through the openings; the pivot-pin,passing through the pivotal point of the frame the recessed handholdsarranged upon opposite sides of the case, each having one end pivoted bythe pivot-pin and having its other end engaging the key-shaft to operatethe latch.

6. In alock, the combination set forth of the case provided in its sidewalls with the key-shaft openings;.the rectangular frame pivoted in thecase by a pivot arranged near one corner of such frame and provided,near another corner of such frame, with an opening to receive thekey-shaft, such opening being surrounded upon each side by ascrewthreaded boss; a key-shaft arranged in such opening; screw-threadedsocket members, one adapted to screw upon each side of the IOO key-shaftopenings and encircling the keyshaft; a pivot-pin passingthrough andprojecting from the case at the pivotal point of the latch-frame; andhandholds, one -upon each side of the case, each having one end pivotedupon the pivot-pin, and its other end provided with a socket to fit uponthe keyshaft.

7. In a lock, the combination set forth of the case provided in its sidewalls with the key-shaft openings; the rectangular frame pivoted in thecase by a pivot arranged near one corner of such frame and provided,near another corner of such frame, with an opening to receive thekey-shaft, such opening being surrounded upon each side by ascrewthreaded boss; a key-shaft arranged in such opening; screw-threadedsocket members,

8. In a lock, the combination of a pivoted latch provided at a distancefrom its pivot with a locking-bolt and a keyhole to receive a key tooperate such bolt; and an escutcheonplate provided with a keyholeadapted to regone adapted to screw upon each side of the key-shaftopeningy and encircling the keyshaft; a pivot-pin passing through andprojecting from the case at the pivotal point of the latch-frame;handholds, one upon each side of the case, each having one end pivotedister with the keyhole in the latch only when upon the pivot-pin, andits other end provided with a socket to fit upon the key-shaft; and theescuteheon-plates adapted to be fastened to the door outside of thehandholds the latch is in its latched position.

AUGUSTUS NEWELL.

lVitnesses:

ALFRED I. ToWNsEND, JAMES R. ToWNsEND.

and provided with the openings for the handholds.

